water samples contain Pb metal with high concentration (250-300mg/L). the ICP-MS instrument could not determine its concentration because it was out of range. make the water sample dilute so that it is below the upper detection limit​

i would say b

explanation:

but i think i would need more information than that

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?

i think its 5049.

i hope this !

the answer is c.the valence of the atoms combine .